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Development and characterization of MWNTs/Chitosan biocomposite fiber

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Abstract

The Preparation of conductive biocomposite fiber through Carbon nanotubes (CNTs) incorporation into biopolymer matrixes has stimulated much interest for bio-implant applications. The present study focuses on development and characterization of biocomposite fiber composed of chitosan (CHT) as a biopolymer and multiwall carbon nanotubes (MWNTs) as a conductive filler. In term of processing, the most important challenge is to prepare a highly stable dispersion of MWNTs in biopolymer matrix. The hydrodynamic diameter distribution of CNTs in acetic acid solution acquired by dynamic light scattering (DLS).Results demonstrate the supreme stability of CNTs dispersion which is extremely essential for homogenous distribution of CNT in polymeric matrix. Rheological properties of the spinning solution have also been investigated to adjust the viscosity for fiber processing step. A range of viscosity between 2000–8000 cP, has been recorded in different CNT loading. The scanning electron microscopy (SEM) images of the surface and cross sectional area of the fibers reveal the formation of nano-pores after MWNT addition. The tensile strength show a maximum increase of about 33.65 % compared to bare CHT. Also, the measurement of four probe electrical conductivity for different MWNTs loading shows a maximum conductivity of 0.107 S/cm at percolation threshold of 2.89 wt%.

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Authors and Affiliations

  1. Textile Engineering Department, Faculty of Engineering, University of Guilan, Rasht, Guilan, Iran

    Negin Piri, Vahid Mottaghitalab & Shahram Arbab

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  1. Negin Piri
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  2. Vahid Mottaghitalab
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  3. Shahram Arbab
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Correspondence to Vahid Mottaghitalab.

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Piri, N., Mottaghitalab, V. & Arbab, S. Development and characterization of MWNTs/Chitosan biocomposite fiber. Fibers Polym 14, 236–242 (2013). https://doi.org/10.1007/s12221-013-0236-y

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  • DOI: https://doi.org/10.1007/s12221-013-0236-y

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